Protective guard for an underwater pool light



FIG. 1 is a front elevational view of a protective guard for an underwater pool light embodying my new design;

FIG. 2 is a side elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top view thereof. 

The ornamental design for a protective guard for an underwater pool light, as shown and described. 